Over the last couple of weeks, it’s been noted that actor Steven Cole—best-known in the U.K. for his role as Leo Johnsons in the soap Brookside—has been noting that he’s been taking riding lessons, had a costume fitting, and so on, and it was clear he was cast in HBO’s Game of Thrones. Today, newly arrived in Dubrovnik (during which there’ll be 4 weeks of shooting or so), he tweeted the following:

I guess now that I’ve arrived in Dubrovnik I should make it official that I have joined the cast of HBO’s #GameOfThrones playing ‘Kovarro’

Fans of the novels will, of course, realize that that name doesn’t appear in the books. He is, it seems, a new character—or maybe a renamed one—and we know he’s playing a Dothraki, as Dothraki language creator David J. Peterson responded to a query from us, indicating that Kovarro’s name is based on rules for creating Dothraki names that he provided the production. Bryan Cogman then noted that the name means “to be standing up”.

It should be interesting to see what his role is, when the show airs or the first interviews start coming out in the run up to the premiere.